Chewing gum base

Abstract

There is disclosed a chewing gum base comprising a solution polymerized styrene-butadiene rubber.

What is claimed is: 
     
         1 . A chewing gum base comprising a solution polymerized styrene-butadiene rubber having a glass transition temperature Tg ranging from −20° C. to 0° C. 
     
     
         2 . The chewing gum base of  claim 1 , wherein the solution polymerized styrene-butadiene rubber has a bound styrene content ranging from 25 to 55 percent by weight. 
     
     
         3 . The chewing gum base of  claim 1 , wherein the solution polymerized styrene-butadiene rubber has a bound styrene content ranging from 30 to 40 percent by weight. 
     
     
         4 . The chewing gum base of  claim 1 , wherein the solution polymerized styrene-butadiene rubber has a vinyl content ranging from 25 to 60 percent by weight, based on the total weight of the styrene and butadiene units. 
     
     
         5 . The chewing gum base of  claim 1 , wherein the solution polymerized styrene-butadiene rubber has a vinyl content ranging from 35 to 45 percent by weight, based on the total weight of the styrene and butadiene units. 
     
     
         6 . The chewing gum base of  claim 1 , wherein the solution polymerized styrene-butadiene rubber shows a high frequency intersection of G′ with G″ at a frequency between 100 and 10 5  rad/sec at 30° C. and 1% strain as measured following ASTM D4440-08. 
     
     
         7 . The chewing gum base of  claim 1 , wherein the gum base comprises from 5 to 95 weight percent of the solution polymerized styrene-butadiene rubber, 1 to 65 percent by weight of a filler, 5 to 45 percent by weight of an elastomer plasticizer, and a gum base stabilizer. 
     
     
         8 . A chewing gum base comprising a solution polymerized styrene-butadiene rubber, wherein the solution polymerized styrene-butadiene rubber shows a high frequency intersection of G′ with G″ at a frequency between 100 and 10 5  rad/sec at 30° C. and 1% strain as measured following ASTM D4440-08. 
     
     
         9 . The chewing gum base of  claim 8 , wherein the solution polymerized styrene-butadiene rubber has a bound styrene content ranging from 25 to 55 percent by weight. 
     
     
         10 . The chewing gum base of  claim 8 , wherein the solution polymerized styrene-butadiene rubber has a bound styrene content ranging from 30 to 40 percent by weight. 
     
     
         11 . The chewing gum base of  claim 8 , wherein the solution polymerized styrene-butadiene rubber has a vinyl content ranging from 25 to 60 percent by weight, based on the total weight of the styrene and butadiene units. 
     
     
         12 . The chewing gum base of  claim 8 , wherein the solution polymerized styrene-butadiene rubber has a vinyl content ranging from 35 to 45 percent by weight, based on the total weight of the styrene and butadiene units. 
     
     
         13 . The chewing gum base of  claim 8 , wherein the solution polymerized styrene-butadiene rubber shows a high frequency intersection of G′ with G″ at a frequency between 100 and 10 5  rad/sec at 30° C. and 1% strain as measured following ASTM D4440-08. 
     
     
         14 . The chewing gum base of  claim 8 , wherein the gum base comprises from 5 to 95 weight percent of the solution polymerized styrene-butadiene rubber, 1 to 65 percent by weight of a filler, 5 to 45 percent by weight of an elastomer plasticizer, and a gum base stabilizer.